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## org.bouncycastle.pqc.crypto.mayo
Class MayoSigner

    java.lang.Object
      org.bouncycastle.pqc.crypto.mayo.MayoSigner

All Implemented Interfaces:
  MessageSigner

public class MayoSigner
extends java.lang.Object
implements MessageSigner

Implementation of the MAYO digital signature scheme as specified in the MAYO documentation. This class provides functionality for both signature generation and verification.

MAYO is a candidate in the NIST Post-Quantum Cryptography: Additional Digital Signature Schemes project, currently in Round 2 of evaluations. For more details about the NIST standardization process, see: NIST PQC Additional Digital Signatures.

References:

MAYO Official Website MAYO Specification Document MAYO Reference Implementation (C)

Constructor Summary
`MayoSigner()`

Method Summary
`byte[]` | `generateSignature(byte[] message)` Generates a MAYO signature for the given message using the initialized private key.
`void` | `init(boolean forSigning, CipherParameters param)` Initializes the signer for either signature generation or verification.
`boolean` | `verifySignature(byte[] message, byte[] signature)` Verifies a MAYO signature against the initialized public key and message.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### MayoSigner

    public MayoSigner()

Method Detail

### init

    public void init(boolean forSigning,
                     CipherParameters param)

  Initializes the signer for either signature generation or verification.

  Specified by:
    `init` in interface `MessageSigner`
  Parameters:
    `forSigning` - for signing mode, for verification
    `param` - CipherParameters containing: `ParametersWithRandom` with `MayoPrivateKeyParameters` (for signing) `MayoPublicKeyParameters` (for verification)
  Throws:
    `java.lang.IllegalArgumentException` - if invalid parameters are provided

### generateSignature

    public byte[] generateSignature(byte[] message)

  Generates a MAYO signature for the given message using the initialized private key. Follows the signature generation process outlined in the MAYO specification document.

  Specified by:
    `generateSignature` in interface `MessageSigner`
  Parameters:
    `message` - The message to be signed
  Returns:
    The signature bytes concatenated with the original message
  See Also:
    MAYO Spec Algorithm 8 and 10

### verifySignature

    public boolean verifySignature(byte[] message,
                                   byte[] signature)

  Verifies a MAYO signature against the initialized public key and message. Implements the verification process specified in the MAYO documentation.

  Specified by:
    `verifySignature` in interface `MessageSigner`
  Parameters:
    `message` - The original message
    `signature` - The signature to verify
  Returns:
    if the signature is valid, otherwise
  See Also:
    MAYO Spec Algorithm 9 and 11

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